Re: [petsc-users] running Petsc programs without a connection.
On 26 March 2015 at 10:15, Sanjay Kharche sanjay.khar...@manchester.ac.uk wrote: Is there a way of configuring or otherwise to get Petsc programs to run when I do not have an internet connection? Make sure you have localhost defined in /etc/hosts, I'm had the same issue in Fedora with fresh installs. $ cat /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 kw2060 kw2060.kaust.edu.sa ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 -- Lisandro Dalcin Research Scientist Computer, Electrical and Mathematical Sciences Engineering (CEMSE) Numerical Porous Media Center (NumPor) King Abdullah University of Science and Technology (KAUST) http://numpor.kaust.edu.sa/ 4700 King Abdullah University of Science and Technology al-Khawarizmi Bldg (Bldg 1), Office # 4332 Thuwal 23955-6900, Kingdom of Saudi Arabia http://www.kaust.edu.sa Office Phone: +966 12 808-0459
Re: [petsc-users] running Petsc programs without a connection.
On Thu, 26 Mar 2015, Matthew Knepley wrote: On Thu, Mar 26, 2015 at 2:15 AM, Sanjay Kharche sanjay.khar...@manchester.ac.uk wrote: Dear All I have a fedora pc which some times cannot have an internet connection. I found that I can run non-Petsc MPI programs when it is not connected to the internet. However, when I try to run my Petsc based program without a connection, I get the following error. By googling a little bit, I found that the mpi launcher requires to log into each of the 4 procs the pc has, and may be using ssh. This or something else may or may not require an internet connection. In my present installation of petsc, I have downloaded and installed all required dependencies (blas, lapack, sundials) including mpich during the configure. I am using a makefile that I took from the ts examples for ex15.c where I changed the ex15 entry to sk2d (my program). I updated the petsc independent mpich to be the same version as the one I got with petsc. Is there a way of configuring or otherwise to get Petsc programs to run when I do not have an internet connection? the error: mpiexec -n 3 ./sk2d Fatal error in PMPI_Init_thread: Other MPI error, error stack: MPIR_Init_thread(498)..: MPID_Init(187).: channel initialization failed MPIDI_CH3_Init(89).: MPID_nem_init(320).: MPID_nem_tcp_init(171).: MPID_nem_tcp_get_business_card(418): MPID_nem_tcp_init(377).: gethostbyname failed, sanjayslaptop.maths.liv.ac.uk (errno 2) This is not PETSc, but rather the way MPICH is configured. I run using -n 3 -hosts localhost,localhost,localhost and it will run fine disconnected. Satish, is there a general fix? Presumably non-petsc MPI programs are using a different install of MPI [openmpi?] that doesn't have this problem - so one could install PETSc with that. The other alternative is to configure the laptop/machine to use 'name' that works with gethostbyname() all the time. I do the following: 1. make sure the hostname is in /etc/hostname $ cat /etc/hostname asterix [one is supporsed to use hostnamectl - but I don't really understand this command. soemtimes the hostname is not saved across reboots] 2. Add an entry to /etc/hosts to resolve the set hostname. I have the following entry: 127.0.0.1 asterix Satish Thanks, Matt cheers Sanjay
Re: [petsc-users] running Petsc programs without a connection.
On Thu, Mar 26, 2015 at 2:15 AM, Sanjay Kharche sanjay.khar...@manchester.ac.uk wrote: Dear All I have a fedora pc which some times cannot have an internet connection. I found that I can run non-Petsc MPI programs when it is not connected to the internet. However, when I try to run my Petsc based program without a connection, I get the following error. By googling a little bit, I found that the mpi launcher requires to log into each of the 4 procs the pc has, and may be using ssh. This or something else may or may not require an internet connection. In my present installation of petsc, I have downloaded and installed all required dependencies (blas, lapack, sundials) including mpich during the configure. I am using a makefile that I took from the ts examples for ex15.c where I changed the ex15 entry to sk2d (my program). I updated the petsc independent mpich to be the same version as the one I got with petsc. Is there a way of configuring or otherwise to get Petsc programs to run when I do not have an internet connection? the error: mpiexec -n 3 ./sk2d Fatal error in PMPI_Init_thread: Other MPI error, error stack: MPIR_Init_thread(498)..: MPID_Init(187).: channel initialization failed MPIDI_CH3_Init(89).: MPID_nem_init(320).: MPID_nem_tcp_init(171).: MPID_nem_tcp_get_business_card(418): MPID_nem_tcp_init(377).: gethostbyname failed, sanjayslaptop.maths.liv.ac.uk (errno 2) This is not PETSc, but rather the way MPICH is configured. I run using -n 3 -hosts localhost,localhost,localhost and it will run fine disconnected. Satish, is there a general fix? Thanks, Matt cheers Sanjay -- What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener
